Road grading and ditching machine



Feb 14, 1%)33. 5 H. BURNSTAD 1,897,235

ROAD GRADING AND DITCHING MACHINE Filed NOV. 19, 1930 Patented Feb. 14,1933 UNITED STATES PATENT OFFICE SIGURD HANS BURNSTAD, F OHATON,ALBERTA, CANADA, ASSIGNOR TO BURNS'IAD GRADING MACHINE COMPANY LIMITED,OF EDMONTON, ALBERTA, CANADA, A COR- ZPORATION ROAD GRADING AND DITCHINGMACHINE Application filed November 19, 1930. Serial No. 496,665.

The invention relates to a road grading and ditching machine, asdescribed in the present specification and illustrated in theaccompanying drawing that forms part of the same.

The invention consists essentially of the novel construction of thevehicle and the operating parts incidental thereto as pointed out in theclaims for novelty following the description in detail of the preferredconstruction.

The objects of the invention are to eliminate many of the structuralfeatures common to road machines and thereby effect concentration of theessential parts and a very considerable reduction of weight without inany way endangering the efficiency of the machine; to facilitate theconstruction of roads by the rapid grading accomplished with thismachine at the minimum expenditure of power; to maintain a constantdeliverv of earth in the direction desired and in this connection insurethe adjustability of the discharge conveyer in order to free the passageof the machine over bridges and through cuts and tunnels; to regulatethe level of the machine frame carrying the conveying apparatus inrelation to the running gear, so that notwithstanding the hummocks,

holes and rats the operating parts will re main practically undisturbed;to establish cutting and directing parts for different classificationsof soil and in that way greatly increase despatch in working the looserearth 5 and in more difficult ground keep well over the average in sofar as the quantities of earth removed; and generally to provide in roadbuilding a grader of light construction requiring hauling power ofmoderate strength and yet durable and effective.

In the drawing, Figure 1 is a plan View of the road-builder with theconveyer belt partly broken away.

Figure 2 is a. side elevational View of the road machine.

Figure 3 is a rear elevational View of the road machine.

Figure 4 is a sectional view of the conveyer belt taken on the line 44in Figure 1.

Figure 5 is a sectional View taken on the line 5-5 in Figure 3.

Figure 6 is a plan View of a modified form of plow assembly.

Figure 7 is a sectional detail of the side wheel adjusting mechanism.

Like numerals of reference indicate corresponding parts throughout thevarious figures.

Referring to the drawing, the main frame 10 forms the plow beam to whichthe plow assembly 11 is attached. The main frame 10 is formed of aplurality of bars, bolted or riveted together and offset at 12. Thefront of the frame 10 is mounted on the swivel bearing 13 for the frontwheel 14 mounted on the axle 15. The clevis 16 is secured to the bearingmember 13. The rear end of the frame 10 is spread at 17 to form the fork18. The crank shaped axle 19 is journalled in the fork 18 and the rearor hand wheel 22 is mounted thereon. The hand lever 23 is rigidlysecured to the end of the axle 19, and by operating this lever the axle19 is rotated and this raises or lowers the plow assembly 11.

An endless conveyer structure 7 4 is secured by a loose connection 75 tothe rear end of the mold board 25 extending from the plowshare 60.

The endless conveyer structure is supported by the saddle frame 26rigidly secured to the frame 10 and to the extension side frame formedof the T-slotted guide plate 27 and transverse brace rods 28 and 29.

The mid-side wheel 30 is mounted on the axle 31 and is adjustablevertically by the screw 32 operated by the wheel 33. The screw 32 ismounted in the plate 34 and is held in position by the head 35 swivelledin the bracket 36 slidably mounted on the T- slotted guide plate 27.

When the machine is drawn; the traction power, applied to the drawbar orclevis 16, is used through the rotation of the mid-wheel 30, to adjustvertically said wheel 30; in this case the screw is operated by thecoa-cting gears 37 and 38, the gear 37 being mounted on'the screw 32 andthe gear 38 being mounted on the shaft 39 journalled in the bearing 67forming part of the bracket 36 and exenclosing the coacting gears 69, 70and 71, the gear 70 being at the lower end of the shaft 39 and the gears69 and 71 being mounted on the axle 31, and forming clutch members withthe coacting double clutchmember 7 2 operated by the fork 7 3 connectedto a suitable hand lever.

The conveyer structure 74 is raisedland lowered by the screws'38 and 39which are carried in the bushings 40 and 41 on the saddle frame 26 ,andextend through the screw threaded blocks 42 and 43. The screw threadedblocks 42 and 43 are secured to the side members 44 and 45 of theconveyer structure 74 and the hand wheels 46 and 47 are attached to thescrews 38 and 39 respectively,

thus in turning these wheels the conveyer structure is raised orlowered.

It will thus be seen that one side of the conveyer structure can beraised independent of the other side and this enables the operator tokeep the surface of the belt 24 horizontal, regardless of the positionof the land and side wheels. The bushings 40 and 41 are slidably carriedon the saddle frame 26 to enable the belt to be swung inwardly oroutwardly depending on where the earth is to be deposited. I i

The conveyer belt 24 is carried on rollers 48 which are carried inbearings 49 secured to the side'memb'ers 44 and 45 of the con veyerstructure 74 and the shaft 50' carries the driving end roller 51 whichhas the bevel gear 52 secured to one end and this bevel gear 52mesheswith the gear 58 and is carried by the shaft 54, which is suitablydriven by a motor 56 positioned on the frame 10.

The plow assembly has the standard 56 to which the landside 57 isattached.- A,

coulter 58 is secured to the forward end 59 of the landside 57 andextends upwardly to the beam 10 to which it is rigidly bolted orotherwise secured. The plow has the share 60 and the moldboard 25. Aside wall 62 is formed on the moldboardand acts as an earth guide to thelower end of the conveyer belt. In Figure 6 a modified form of plowassembly is shown in which 63 is the landside secured to the standard64, the share 65 is attached to the land side and the moldboard 66 ispositioned adjacent the share.

It will be noted that the angle on the face of the share is in thereverse, as to what is done in ordinary practice. Ihis enables the useof a moldboardhaving a'surface' approximat-ely rectangular in shape andeliminates the sharp curve usual to moldboards and greatly facilitatesthe raising of 'thee'arth onto the conveyor belt. Y In the operation ofthe machine, a tractor or other source of motivepower is attached to thedrawbar 16, and the road'machine pulled forwardly. The lever 23 isplaced bridges and other obstructions the end of .the belt can be swunginwardly to clear the bridge, thus allowing the roadbuilder to pass"over the'bridge without dismantling the road builder in any manner.

This machine pivots easily on its three wheels making it possible toturnaround in a small radius. hen moving the machine "from place toplace the hand lever 23 is moved forward, this rotates the crank axle l9and raises the plowshare off the ground, at the same time the wheel 80may be lowered to raise that side of the machine so that there will beno possibility of damaging the plow when not in use.

WhatI claim is I 1. In road grading and ditching machines, a vehicleframe, running gear formed of a midside Wheel, a rear land Wheel and. adirigible front wheeel, a plowshare and moldboard, a conveyer structuremounted on said frame in line with said moldboard and horizontally andvertically adjustable and adjusting means forsaid midside wheel, com

prising a screw actuated by co-acting gears, a clutch means between twoof said gears and a control lever for said clutch means.

2. a In road grading and ditching machines, a vehicle frame, runninggear formed of an adjustable midside wheel, a dirigible front wheelandia rear land wheel, said rear land wheel being carried on a crankshaped axle, a control lever mounted on said axle, a plowshare andmoldboard, a conveyer structure mounted on said frame in line with saidmoldboard and horizontally and vertically adjustable. V i

3. In road grading and ditching machines, a'vehicle frame, running gearformed of an adjustable midside wheel, a dirigible front wheel and arear land wheel, said rear land wheel' being carried on a crank shapedaxle,

a'control lever mounted on said axle, a plowshare and moldboard, aconveyer structure mounted on said frame in line with said moldboardandhorizontally and vertically adjustable, and adjusting means for saidmidside wheel comprising a screw actuated by co-acting gears, a clutchmeans between two of said gears and a control lever for said clutchmeans. I

i 4. In road grading and ditching machines, a vehicle comprising a framemounted on front and rear wheels and having a side extension mounted onan adjustable wheel, a saddle frame transversely and rigidly I securedon said frame and extension, bushings slidably mounted on said saddleframe, a plowshare and moldboard rigidly secured to the main frame, anda conveyer belt structure supported by screws carried in said bushingsand having a driven belt extending under the inner end of saidmoldboard.

5. In road grading and ditching machines, a vehicle frame, running gearformed of a midside wheel, a rear land wheel and a dirigible frontwheel, a plowshare and moldboard, a conveyer structure mounted on saidframe in line with said moldboard and horizontally and verticallyadjustable and adjusting means for said midside wheel, said meansconsisting of a transverse saddle frame, bushings slidably mounted onsaid saddle frame, threaded rods extending through said bushings andengaging with screw threaded lugs on said conveyer structure and handwheels on said threaded rods.

6. In road grading and ditching machines, a vehicle frame, running gearformed of an adjustable midside wheel, a dirigible front wheel and arear land wheel, said rear land wheel being carried on a crank shapedaxle, a control lever mounted on said axle, a plowshare and moldboard, aconveyer structure comprising a frame, rollers mounted between saidframe and an endless belt carried by said rollers, said conveyerstructure being mounted on said frame in line with said moldboard andhorizontally and vertically adjustable, and adjusting means for saidmidside wheel comprising a screw actuated by coacting gears, a clutchmeans between two of said gears and a control lever for said clutchmeans.

Signed at the city of Ottawa, Province of Ontario, Dominion of Canada,this 7th day of October 1930.

SIGURD HANS BURNSTAD.

